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WO2013065437A1 - Unité de climatisation d'intérieur - Google Patents

Unité de climatisation d'intérieur Download PDF

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Publication number
WO2013065437A1
WO2013065437A1 PCT/JP2012/075460 JP2012075460W WO2013065437A1 WO 2013065437 A1 WO2013065437 A1 WO 2013065437A1 JP 2012075460 W JP2012075460 W JP 2012075460W WO 2013065437 A1 WO2013065437 A1 WO 2013065437A1
Authority
WO
WIPO (PCT)
Prior art keywords
coanda
air
blade
wind direction
indoor unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/075460
Other languages
English (en)
Japanese (ja)
Inventor
安冨　正直
正史 鎌田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of WO2013065437A1 publication Critical patent/WO2013065437A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/28—Details or features not otherwise provided for using the Coanda effect

Definitions

  • the present invention relates to an air conditioning indoor unit.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-232531
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-232531
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-232531
  • This upward Coanda airflow causes a so-called short circuit that is drawn into the suction port along the front surface of the casing. Therefore, a movable air guide plate is disposed in the vicinity of the air outlet and moves away from the front surface of the casing. Guides the airflow. However, if the state where the cold air flows on one side of the air guide plate continues for a long time, the opposite surface condenses, so it is necessary to apply a heat insulating material.
  • the subject of this invention is providing the air-conditioning indoor unit which can prevent dew condensation of a baffle plate.
  • An air conditioning indoor unit is an air conditioning indoor unit capable of changing a flow of blown air blown from a blower outlet after being taken in from a suction port and harmonized in a main body casing in a predetermined direction.
  • a movable air guide plate and a control unit are provided.
  • the wind guide plate adjusts the wind direction of the blown air during use, and is housed in a position away from the front of the air passage and the blowout port of the blown air when not used.
  • the control unit controls the wind guide plate so that the gap between the wind guide plate and the formation wall of the blower outlet becomes larger when the wind guide plate is used than when the wind guide plate is housed.
  • the air conditioning indoor unit according to the second aspect of the present invention is the air conditioning indoor unit according to the first aspect, and the gap between the air guide plate and the blower outlet forming wall is substantially zero when accommodated.
  • this air conditioning indoor unit if there is a gap between the wind guide plate and the wall where the air outlet is formed, the appearance may be deteriorated, so that the gap becomes almost zero suppresses at least a decrease in designability. can do.
  • the air conditioning indoor unit according to the third aspect of the present invention is the air conditioning indoor unit according to the first aspect, and the housing portion is provided on the front surface portion of the main casing.
  • the front portion of the main casing is formed with a shape that prevents the occurrence of the Coanda effect. If there is a suction port above the front part of the main casing, the air that has passed through the gap between the air guide plate and the wall where the blower outlet is formed becomes a Coanda airflow along the front part of the casing, and is sucked into the suction port to create a short circuit. cause.
  • An air conditioning indoor unit is the air conditioning indoor unit according to any one of the first to third aspects, wherein the air guide plate is provided in the vicinity of the outlet, It is a Coanda vane that makes a Coanda airflow along its lower surface.
  • the air guide plate is provided in the vicinity of the outlet, It is a Coanda vane that makes a Coanda airflow along its lower surface.
  • the blown air can be deflected upward or blown without a combination of the Coanda blades and the wind guide plate as in the conventional product. Furthermore, since air passes through both sides of the Coanda blade, condensation on the Coanda blade is also prevented.
  • An air conditioning indoor unit is the air conditioning indoor unit according to any one of the first to fourth aspects, wherein a suction port is provided on the top surface of the main body casing, and the front surface of the main body casing. There is no inlet in the part.
  • this air conditioning indoor unit since there is no suction port in the front portion of the main body casing, the phenomenon that the air passing through the gap between the Coanda blades and the front portion of the main body casing is sucked into the suction port and becomes a short circuit is suppressed.
  • the air conditioning indoor unit for example, in order to improve the appearance, even when the gap between the air guide plate and the blower outlet forming wall is set small when the air guide plate is accommodated, it is used. Sometimes, the gap between the air outlet and the forming wall becomes larger than that during housing, so that air passes through both sides of the air guide plate. As a result, condensation on the air guide plate is prevented.
  • the air conditioning indoor unit when there is a gap between the air guide plate and the formation wall of the outlet, the appearance may be deteriorated, so that the gap becomes almost zero, At least a decrease in design properties can be suppressed.
  • the shape that prevents the occurrence of the Coanda effect is formed on the front surface portion of the main body casing, the generation of the Coanda airflow along the front surface portion of the main body casing is prevented, Short circuit is prevented.
  • the blown air can be deflected upward or blown without using a combination of the Coanda blade and the wind guide plate as in the conventional product. Furthermore, since air passes through both sides of the Coanda blade, condensation on the Coanda blade is also prevented. In the air conditioning indoor unit pertaining to the fifth aspect of the present invention, the phenomenon that the wind passing through the gap between the Coanda blades and the front surface portion of the main body casing is sucked into the inlet and becomes a short circuit is suppressed.
  • wing The conceptual diagram which shows the direction of blowing air and the direction of Coanda airflow.
  • wing consist, and the internal angle which the tangent of the terminal F of a scroll and a wind direction adjustment blade
  • the side view of the air-conditioning indoor unit installation space which shows the wind direction of Coanda airflow when a Coanda blade
  • the block diagram which shows the relationship between a control part and a remote control.
  • the front view of the display part showing the low-order menu of the "Coanda wind direction setting" menu.
  • the side view of the accommodating part periphery of the air-conditioning indoor unit which concerns on a modification.
  • FIG. 1 is a cross-sectional view of the air conditioning indoor unit 10 when operation is stopped according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of the air conditioning indoor unit 10 during operation. 1 and 2, the air conditioning indoor unit 10 is a wall-hanging type, and a main body casing 11, an indoor heat exchanger 13, an indoor fan 14, a bottom frame 16, and a control unit 40 are mounted thereon.
  • the main body casing 11 has a top surface portion 11a, a front panel 11b, a back plate 11c, and a lower horizontal plate 11d, and houses an indoor heat exchanger 13, an indoor fan 14, a bottom frame 16, and a control unit 40 therein. .
  • the top surface part 11a is located in the upper part of the main body casing 11, and the inlet (not shown) is provided in the front part of the top surface part 11a.
  • the front panel 11b constitutes the front part of the indoor unit, and has a flat shape without a suction port. Further, the upper end of the front panel 11b is rotatably supported by the top surface portion 11a, and can operate in a hinged manner.
  • the indoor heat exchanger 13 and the indoor fan 14 are attached to the bottom frame 16.
  • the indoor heat exchanger 13 exchanges heat with the passing air.
  • the indoor heat exchanger 13 has an inverted V-shape in which both ends are bent downward in a side view, and the indoor fan 14 is located below the indoor heat exchanger 13.
  • the indoor fan 14 is a cross-flow fan, blows air taken in from the room against the indoor heat exchanger 13 and then blows it into the room.
  • An air outlet 15 is provided at the lower part of the main body casing 11.
  • a wind direction adjusting blade 31 that changes the direction of the blown air blown from the blower outlet 15 is rotatably attached to the blower outlet 15.
  • the wind direction adjusting blade 31 is driven by a motor (not shown) and can change the direction of the blown air, and can also open and close the blowout port 15.
  • the wind direction adjusting blade 31 can take a plurality of postures having different inclination angles.
  • a Coanda blade 32 is provided in the vicinity of the air outlet 15.
  • the Coanda blade 32 can take a posture inclined in the front-rear direction by a motor (not shown), and is accommodated in the accommodating portion 130 provided in the front panel 11b when the operation is stopped.
  • the Coanda blade 32 can take a plurality of postures having different inclination angles. Further, the air outlet 15 is connected to the inside of the main body casing 11 by the air outlet channel 18. The blowout channel 18 is formed along the scroll 17 of the bottom frame 16 from the blowout port 15.
  • the indoor air is sucked into the indoor fan 14 through the suction port and the indoor heat exchanger 13 by the operation of the indoor fan 14, and blown out from the blower outlet 15 through the blowout passage 18 from the indoor fan 14.
  • the control unit 40 is located on the right side of the indoor heat exchanger 13 and the indoor fan 14 when the main body casing 11 is viewed from the front panel 11b, and controls the rotational speed of the indoor fan 14, the wind direction adjusting blade 31 and the Coanda blade 32. Perform motion control.
  • the depth of the depression in this region is set so as to match the thickness dimension of the Coanda blade 32, and constitutes a housing portion 130 in which the Coanda blade 32 is housed.
  • the surface of the accommodating part 130 is also a gentle circular curved surface.
  • the blower outlet 15 is formed in the lower part of the main body casing 11, and is a rectangular opening which makes a horizontal direction (direction orthogonal to the paper surface of FIG. 1) a long side.
  • the lower end of the blower outlet 15 is in contact with the front edge of the lower horizontal plate 11d, and the virtual plane connecting the lower end and the upper end of the blower outlet 15 is inclined forward and upward.
  • Scroll 17 The scroll 17 is a partition wall curved so as to face the indoor fan 14 and is a part of the bottom frame 16.
  • the end F of the scroll 17 reaches the vicinity of the periphery of the air outlet 15.
  • the air passing through the blowout flow path 18 travels along the scroll 17 and is sent in the tangential direction of the end F of the scroll 17. Therefore, if there is no wind direction adjusting blade 31 at the air outlet 15, the air direction of the air blown out from the air outlet 15 is a direction substantially along the tangent L 0 of the terminal end F of the scroll 17.
  • the vertical wind direction adjusting plate 20 includes a plurality of blade pieces 201 and a connecting rod 203 that connects the plurality of blade pieces 201. Further, the vertical air direction adjusting plate 20 is disposed nearer the indoor fan 14 than the air direction adjusting blades 31 in the blowout flow path 18. The plurality of blade pieces 201 swing left and right around a state perpendicular to the longitudinal direction as the connecting rod 203 horizontally reciprocates along the longitudinal direction of the outlet 15. The connecting rod 203 is horizontally reciprocated by a motor (not shown). (2-5) Wind direction adjusting blade 31 The wind direction adjusting blade 31 has an area that can block the air outlet 15.
  • the outer side surface 31 a is finished to have a gentle circular curved surface that protrudes outwardly as if it is an extension of the curved surface of the front panel 11 b. Further, the inner side surface 31b (see FIG. 2) of the wind direction adjusting blade 31 also forms an arcuate curved surface substantially parallel to the outer surface.
  • the wind direction adjusting blade 31 has a rotation shaft 311 at the lower end.
  • the rotating shaft 311 is connected to the rotating shaft of a stepping motor (not shown) fixed to the main body casing 11 in the vicinity of the lower end of the air outlet 15.
  • the rotation shaft 311 rotates counterclockwise when viewed from the front in FIG. 1, so that the upper end of the airflow direction adjusting blade 31 moves away from the upper end side of the outlet 15 to open the outlet 15.
  • the rotation shaft 311 rotates in the clockwise direction in FIG. 1, the upper end of the wind direction adjusting blade 31 operates so as to approach the upper end side of the outlet 15 to close the outlet 15.
  • the Coanda blade 32 is stored in the storage unit 130 while the air-conditioning operation is stopped or in an operation in the normal blowing mode described later.
  • the Coanda blade 32 moves away from the accommodating portion 130 by rotating.
  • the rotation shaft 321 of the Coanda blade 32 is provided in the vicinity of the lower end of the housing portion 130 and inside the main body casing 11 (a position above the upper wall of the outlet flow passage 18).
  • the rotating shaft 321 is connected with a predetermined interval. Therefore, as the rotation shaft 321 rotates and the Coanda blade 32 moves away from the housing portion 130 on the front surface of the casing, the height position of the lower end of the Coanda blade 32 rotates so as to become lower.
  • the inclination when the Coanda blade 32 rotates and opens is gentler than the inclination of the casing front surface portion.
  • the accommodating portion 130 is provided outside the air passage, and the entire Coanda blade 32 is accommodated outside the air passage when being accommodated.
  • only a part of the Coanda blade 32 may be accommodated outside the air passage, and the rest may be accommodated in the air passage (for example, the upper wall portion of the air passage).
  • the rotating shaft 321 rotates counterclockwise in the front view of FIG. 1, the upper and lower ends of the Coanda blades 32 are separated from the housing portion 130 while drawing an arc.
  • the shortest distance between the casing front portion and the accommodating portion 130 is larger than the shortest distance between the lower end and the accommodating portion 130. That is, the Coanda blade 32 is controlled so as to move away from the front surface of the casing as it goes forward.
  • the rotation shaft 321 rotates in the clockwise direction in the front view of FIG. 1
  • the Coanda blade 32 approaches the storage unit 130 and is finally stored in the storage unit 130.
  • the operating state of the Coanda blade 32 includes a state where the Coanda blade 32 is housed in the storage unit 130, a posture rotated and tilted forward and upward, a posture rotated and substantially horizontal, and a posture rotated and tilted forward and downward. is there.
  • the outer surface 32a of the Coanda blade 32 is finished to a gentle circular curved surface that protrudes outwardly as if it is an extension of the gentle circular curved surface of the front panel 11b.
  • the inner side surface 32 b of the Coanda blade 32 is finished to have an arcuate curved surface that follows the surface of the housing portion 130.
  • the dimension in the longitudinal direction of the Coanda blade 32 is set to be equal to or larger than the dimension in the longitudinal direction of the wind direction adjusting blade 31.
  • the reason for this is to receive all of the blown air whose wind direction has been adjusted by the wind direction adjusting blade 31 by the Coanda blade 32, and its purpose is to prevent the blown air from the side of the Coanda blade 32 from short-circuiting.
  • Direction control of blown air The air-conditioning indoor unit of the present embodiment, as means for controlling the direction of blown air, is a normal blow mode that adjusts the direction of blown air by rotating only the wind direction adjusting blade 31 and the wind direction.
  • the adjustment blade 31 and the Coanda blade 32 are rotated so that the Coanda effect uses the Coanda effect to make the blown air flow along the outer surface 32a of the Coanda blade 32, and the tips of the wind direction adjustment blade 31 and the Coanda blade 32, respectively.
  • FIG. 3A is a side view of the wind direction adjusting blade 31 and the Coanda blade 32 when the blown air is normally forward blown. In FIG.
  • the control unit 40 rotates the wind direction adjusting blade 31 to a position where the inner side surface 31b of the wind direction adjusting blade 31 becomes substantially horizontal.
  • wing 31 has comprised the circular arc curved surface like this embodiment, the wind direction adjustment blade
  • FIG. 3B is a side view of the wind direction adjusting blade 31 and the Coanda blade 32 when the blown air is normally forward down blown. In FIG. 3B, when the user wants to direct the blowing direction downward from “normal forward blowing”, the user may select “normal forward lower blowing”.
  • control unit 40 rotates the wind direction adjusting blade 31 until the tangent at the front end E1 of the inner side surface 31b of the wind direction adjusting blade 31 becomes lower than the horizontal. As a result, the blown air is in a front lower blowing state.
  • Coanda effect utilization mode means that if there is a wall near the flow of gas or liquid, it flows in the direction along the wall surface even if the direction of the flow is different from the direction of the wall. It is a phenomenon to try (Asakura Shoten "Dictionary of Law").
  • the Coanda utilization mode includes “Coanda airflow front blowing” and “Coanda airflow ceiling blowing” using this Coanda effect. Further, the direction of the blown air and the direction of the Coanda airflow differ depending on the method of defining the reference position, so an example is shown below, but is not limited thereto.
  • FIG. 4A is a conceptual diagram showing the direction of blown air and the direction of Coanda airflow.
  • the inclination of the direction (D1) of the blown air changed by the wind direction adjusting blade 31 becomes close to the posture (inclination) of the Coanda blade 32. There is a need.
  • the Coanda blade 32 and the wind direction adjusting blade 31 need to be equal to or less than a predetermined opening angle, and both the adjustment plates (31, 32) are within the range, and The relationship is established. Thereby, as shown in FIG. 4A, after the wind direction of the blown air is changed to D1 by the wind direction adjusting blade 31, it is further changed to D2 by the Coanda effect.
  • FIG. 4B is a conceptual diagram illustrating an example of an opening angle between the wind direction adjusting blade 31 and the Coanda blade 32.
  • the wind direction adjusting blade 31 and the Coanda blade 32 have an inner angle formed by the tangent of the end F of the scroll 17 and the Coanda blade 32 and the tangent of the end F of the scroll 17. It is preferable to take a posture that satisfies the condition that it is larger than the inner angle formed by the wind direction adjusting blade 31. 5A (the inner angle R2 formed by the tangent line L0 of the terminal end F of the scroll 17 and the Coanda blade 32 when the Coanda airflow is blown forward and the tangent line L0 of the terminal end F of the scroll 17 and the airflow direction adjusting blade 31 are formed.
  • Comparison diagram with inner angle R1) and FIG. 5B inner angle R2 formed between tangent L0 of end F of scroll 17 and Coanda blade 32 when Coanda airflow ceiling is blown, tangent L0 of end F of scroll 17 and wind direction adjusting blade 31) (Refer to the comparison figure with the internal angle R1).
  • 3C is a side view of the wind direction adjusting blade 31 and the Coanda blade 32 during the Coanda airflow forward blow.
  • the control unit 40 moves the airflow direction adjustment blade 31 until the tangent L1 at the front end E1 of the inner side surface 31b of the airflow direction adjustment blade 31 becomes lower than the horizontal. Rotate.
  • the control unit 40 rotates the Coanda blade 32 until the outer surface 32a of the Coanda blade 32 becomes substantially horizontal.
  • the Coanda blade 32 is rotated until the tangent L2 at the front end E2 of the outer surface 32a becomes substantially horizontal. That is, as shown in FIG. 5A, the inner angle R2 formed by the tangent line L0 and the tangent line L2 is larger than the inner angle R1 formed by the tangent line L0 and the tangent line L1.
  • the blown air adjusted to the front lower blow by the wind direction adjusting blade 31 becomes a flow attached to the outer surface 32a of the Coanda blade 32 by the Coanda effect, and changes to a Coanda airflow along the outer surface 32a. Therefore, even if the tangential L1 direction at the front end E1 of the airflow direction adjusting blade 31 is the front lower blowing, the tangential L2 direction at the front end E2 of the Coanda blade 32 is horizontal, so that the blown air is blown from the Coanda blade 32 by the Coanda effect. It blows off in the tangent L2 direction at the front end E2 of the outer side surface 32a, that is, in the horizontal direction.
  • the Coanda blades 32 are separated from the casing front surface and the inclination becomes gentle, and the blown air becomes more susceptible to the Coanda effect in front of the front panel 11b.
  • the blown air whose wind direction is adjusted by the wind direction adjusting blade 31 is the front lower blow, it becomes horizontal blown air due to the Coanda effect.
  • the gap between the Coanda blade 32 and the upper forming wall 15 a of the blower outlet 15 is larger than that during housing, and air also passes through the inner surface 32 b of the Coanda blade 32.
  • FIG. 3D is a side view of the wind direction adjusting blade 31 and the Coanda blade 32 when the Coanda airflow ceiling is blown.
  • the control unit 40 rotates the airflow direction adjusting blade 31 until the tangent L1 at the front end E1 of the inner side surface 31b of the airflow direction adjusting blade 31 becomes horizontal.
  • the control part 40 rotates the Coanda blade
  • the blown air adjusted to be blown horizontally by the wind direction adjusting blade 31 becomes a flow attached to the outer surface 32a of the Coanda blade 32 by the Coanda effect, and changes to a Coanda airflow along the outer surface 32a.
  • the tangential L2 direction at the front end E2 of the Coanda blade 32 is forward upward blowing, so that the blown air is generated by the Coanda effect by the Coanda effect. It blows out in the tangent L2 direction at the front end E2 of the outer side surface 32a, that is, the ceiling direction. Since the front end portion of the Coanda blade 32 protrudes outward from the air outlet 15, the Coanda airflow reaches further away. Further, since the tip of the Coanda blade 32 is positioned above the outlet 15, the wind is prevented from traveling straightly downward along the scroll 17 on the upper side of the Coanda blade 32. The upward induction of is difficult to be inhibited.
  • the Coanda blades 32 are separated from the casing front surface and the inclination becomes gentle, and the blown air becomes more susceptible to the Coanda effect in front of the front panel 11b.
  • the blown air whose wind direction is adjusted by the wind direction adjusting blade 31 is forward blowing, it becomes upward air due to the Coanda effect.
  • the wind direction is changed while the pressure loss due to the ventilation resistance of the wind direction adjusting blade 31 is suppressed.
  • the blown air is guided toward the ceiling while the blower outlet 15 remains open. That is, the blown air is guided toward the ceiling in a state where the ventilation resistance is kept low.
  • the size in the longitudinal direction of the Coanda blade 32 is not less than the size in the longitudinal direction of the wind direction adjusting blade 31. Therefore, all of the blown air whose wind direction is adjusted by the wind direction adjusting blade 31 can be received by the Coanda blade 32, and the effect that the blown air is prevented from short-circuiting from the side of the Coanda blade 32 is also achieved.
  • FIG. 3E is a side view of the wind direction adjusting blade 31 and the Coanda blade 32 during the down-blowing. 3E, when “downward blowing” is selected, the control unit 40 rotates the wind direction adjusting blade 31 until the tangent at the front end E1 of the inner side surface 31b of the wind direction adjusting blade 31 is directed downward.
  • control part 40 rotates the Coanda blade
  • the blown air passes between the wind direction adjusting blade 31 and the Coanda blade 32 and is blown downward.
  • FIG. 6A is a side view of the air-conditioning indoor unit installation space showing the wind direction of the Coanda airflow when the Coanda blade 32 takes the first posture.
  • the air conditioning indoor unit 10 is installed above the indoor side wall.
  • the Coanda blade 32 is in a state of being housed in the housing portion 130 (hereinafter referred to as a first posture). After the Coanda blade 32 is in the first posture, the air direction adjustment blade 31 is made to face upward from the horizontal so that the blown air whose air direction has been adjusted on the inner surface 31b of the wind direction adjustment blade 31 leaves the inner surface 31b. The direction is changed so as to be pulled by the outer surface 32a of the Coanda blade 32, and the first Coanda airflow flows along the outer surface 32a of the Coanda blade 32 and the front panel 11b.
  • FIG. 7A is a block diagram showing the relationship between the control unit 40 and the remote controller 50.
  • the remote controller 50 transmits an infrared signal wirelessly.
  • the remote controller 50 has switching means for switching the wind direction. Specifically, it has a display unit 52 that displays a wind direction selection menu and a cursor 52a for designating each wind direction selection menu so that the user can select the wind direction.
  • the user selects “Coanda wind direction setting” from the menu displayed on the display unit 52 with the cursor 52a. Since the technology for selecting and confirming the menu by the remote controller 50 is widely disclosed, detailed description is omitted.
  • FIG. 7B is a front view of the display unit 52 showing a lower menu of the “Coanda wind direction setting” menu.
  • the first to fifth Coanda angles are prepared in advance in the lower menu of the “Coanda wind direction setting” menu.
  • the Coanda blade 32 is displayed.
  • the first posture shown in FIG. 6A is taken, and a Coanda airflow in a first direction corresponding to the first Coanda angle is generated.
  • FIG. 6B is a side view of the air conditioning indoor unit installation space showing the wind direction of the Coanda airflow when the Coanda blade 32 takes the second posture. .
  • the second posture of the Coanda blade 32 in FIG. 6B can be achieved by specifying and confirming the second Coanda angle with the cursor 52a in FIG. 7B.
  • the Coanda airflow generated when the Coanda blade 32 is in the second posture corresponds to the Coanda airflow described in the section “(3-2-2) Coanda airflow ceiling blowing”.
  • the control unit 40 rotates the wind direction adjusting blade 31 until the tangent L1 at the front end E1 of the inner side surface 31b of the wind direction adjusting blade 31 becomes horizontal, Next, the Coanda blade 32 is rotated until the tangent L2 at the front end E2 of the outer side surface 32a is directed upward.
  • FIG. 8A is a side view of the wind direction adjusting blade 31 and the Coanda blade 32 when the Coanda blade 32 is in the third posture.
  • the third posture of the Coanda blade 32 is downward than the second posture.
  • the Coanda blade 32 in the second posture is drawn with a two-dot chain line
  • the Coanda blade 32 in the third posture is drawn with a solid line.
  • the Coanda airflow is reliably generated in the second posture and the posture of the airflow direction adjusting blade 31 is not changed, the Coanda airflow is directed from the outer surface 32a of the Coanda blade 32 in the third posture that is downward than the second posture. It is clear that it does not peel.
  • it can be achieved by selecting the second Coanda angle or the third Coanda angle with the cursor 52a in FIG. 7B.
  • the blown air is adjusted in the direction approaching the curved surface 320 of the Coanda blade 32 by the wind direction adjusting blade 31, and the Coanda blade 32 uses the blown air whose air direction is adjusted as its own. Since the air flow is changed to the Coanda airflow along the curved surface 320, the wind direction deflection effect is great.
  • the tip of the Coanda blade 32 faces the ceiling, so the Coanda airflow along the curved surface 320 of the Coanda blade 32 is separated from the front panel 11b and You can go upward. In this case, even if there is a suction port above the front surface of the main body casing 11, a short circuit can be prevented.
  • the second posture and the third posture of the Coanda blade 32 are selected when it is desired to fly conditioned air far away.
  • the Coanda blade 32 is preferably in the second posture.
  • the posture of the Coanda blade 32 is preferably the third posture.
  • the user can select the posture of the Coanda blade 32 according to the size of the indoor space via the remote controller 50, so that the user can use the conditioned air evenly in the air-conditioning target space. Is possible.
  • the outer surface 32a of the Coanda blade 32 may be a convexly curved shape or a planar shape.
  • the outer surface 32a is preferably convexly curved in the following points.
  • the outer surface 32 a of the Coanda blade 32 is curved in a convex shape to form a curved surface 320. Since the Coanda blade 32 moves away from the front panel 11b as it moves away from the air outlet 15, the Coanda airflow along the curved surface 320 of the Coanda blade 32 advances upward while leaving the front panel 11b. be able to. Further, the angle of the tip of the Coanda blade 32 becomes an upward angle, and an upward airflow can be generated without making the inclination angle of the Coanda blade sharp.
  • the blown air becomes an upward Coanda airflow along the curved surface 320 of the Coanda blade 32.
  • the front panel 11b and the curved surface 320 of the Coanda blade 32 are curved so as to be aligned on one continuous virtual curved surface, so that the appearance of the casing front portion when the Coanda blade 32 is accommodated is improved.
  • the curved surface 320 of the Coanda blade 32 may be formed of a plurality of curved surfaces having different degrees of curvature.
  • FIG. 6C is a side view of the air-conditioning indoor unit installation space showing the wind direction of the Coanda airflow when the Coanda blade 32 takes the fourth posture.
  • wing 32 in FIG. 6C can be comprised by specifying and confirming a 4th Coanda angle with the cursor 52a in FIG. 7B.
  • the Coanda airflow generated when the Coanda blade 32 is in the fourth posture corresponds to the Coanda airflow described in the section “(3-2-1) Coanda airflow forward blowing”.
  • the controller 40 adjusts the wind direction adjusting blade 31 until the tangent line L1 at the front end E1 of the inner side surface 31b of the wind direction adjusting blade 31 becomes lower than the horizontal.
  • the Coanda blade 32 is rotated until the outer surface 32a of the Coanda blade 32 becomes substantially horizontal.
  • the tangential L1 direction at the front end E1 of the airflow direction adjusting blade 31 is the front lower blowing
  • the tangential L2 direction at the front end E2 of the Coanda blade 32 is horizontal, so that the blown air is blown from the Coanda blade 32 by the Coanda effect. It blows off in the tangent L2 direction at the front end E2 of the outer side surface 32a, that is, in the horizontal direction.
  • FIG. 8B is a side view of the wind direction adjusting blade 31 and the Coanda blade 32 when the Coanda blade 32 is in the fifth posture.
  • the fifth posture of the Coanda blade 32 is more downward than the fourth posture.
  • the Coanda blade 32 in the fourth posture is drawn with a two-dot chain line
  • the Coanda blade 32 in the fifth posture is drawn with a solid line for comparison.
  • the Coanda airflow is reliably generated in the fourth posture and the posture of the wind direction adjusting blade 31 is not changed, the Coanda airflow is directed from the outer surface 32a of the Coanda blade 32 in the fifth posture, which is downward than the fourth posture. It is clear that it does not peel.
  • it can be achieved by selecting the fourth Coanda angle or the fifth Coanda angle with the cursor 52a in FIG. 7B.
  • the attitude of the wind direction adjusting vane 31 is different from each of the first attitude, the second attitude, and the fourth attitude of the Coanda vane 32.
  • the Coanda airflow by the Coanda blade 32 can be directed in any direction by a combination of the posture of the wind direction adjusting blade 31 and the posture of the Coanda blade 32.
  • the Coanda blade 32 adjusts the wind direction of the blown air when used, and is housed in the housing part 130 at a position deviated from the front of the air passage and the outlet of the blown air when not used.
  • control unit 40 controls the Coanda blade 32 so that the gap between the Coanda blade 32 and the upper forming wall 15a of the air outlet 15 is larger than when accommodated when the Coanda blade 32 is used, Air will pass through. As a result, condensation on the Coanda blade 32 is prevented.
  • the blown air can be deflected upward or blown by only the Coanda blade 32 without using a Coanda blade and a wind guide plate as in the conventional product.
  • the gap between the Coanda blade 32 and the upper forming wall 15 a of the blower outlet 15 becomes substantially zero at the time of accommodation, so that at least deterioration in design can be suppressed.
  • the amount of air passing through the gap between the Coanda blade 32 and the upper forming wall 15a of the outlet 15 is not so large, and most of the air is along the inner surface 32b of the Coanda blade 32. Flowing.
  • FIG. 9 is a side view of the vicinity of the accommodating portion 130 of the air conditioning indoor unit 10 according to the modification.
  • the protrusion 140 is provided on the wall surface that connects the lower portion of the accommodating portion 130 and the upper forming wall 15 a of the outlet 15.
  • the present invention is useful for a wall-mounted air conditioning indoor unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Air Conditioning Control Device (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Duct Arrangements (AREA)

Abstract

L'invention concerne une unité de climatisation d'intérieur qui peut éviter la condensation au niveau d'un déflecteur de Coanda (32). Dans l'unité de climatisation d'intérieur (10), le déflecteur de Coanda (32) ajuste l'orientation du flux d'air refoulé lors de son utilisation, et est stocké dans une position éloignée de l'avant d'une ouverture de refoulement et d'une trajectoire de l'air refoulé lorsqu'il n'est pas utilisé. Une unité de commande (40) commande le déflecteur de Coanda (32) de sorte que l'interstice entre le déflecteur de Coanda (32) et la paroi formant l'ouverture de refoulement devienne plus grand lorsque le déflecteur de Coanda (32) est utilisé que lorsqu'il est stocké, ce qui provoque le passage de l'air le long des deux surfaces du déflecteur de Coanda (32). Cela empêche ainsi la condensation au niveau du déflecteur de Coanda (32).
PCT/JP2012/075460 2011-10-31 2012-10-02 Unité de climatisation d'intérieur Ceased WO2013065437A1 (fr)

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JP2011239779A JP5408228B2 (ja) 2011-10-31 2011-10-31 空調室内機
JP2011-239779 2011-10-31

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WO2013065437A1 true WO2013065437A1 (fr) 2013-05-10

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